Mother in law

So my mil believes I should not be mad at her for tell my daughter she is autistic just because my daughter does not want to look at her. She goes oh yeah you are 100% autistic. Even if my daughter was which to me she’s still my daughter I would love her no matter what but if she was not medically diagnosed with it do not coach her that she is autistic. She looks at at everyone else in there eyes unless she’s having a fun time and playing. Am I wrong for not letting her see my daughter? Everytime I do she thinks my daughter is hers and will not let me hold my child when my child wants me..